MEMSIC (Andover, MA) offers the MMC3630KJ magnetometer for portable devices. The magnetometer includes an integrated monolithic 3-axis AMR sensor and a signal conditioning ASIC. The BGA package measures 1.2 × 1.2 × 0.5 mm, and the MMC3630KJ reaches ±30G range. With 600Hz magnetic sensing bandwidth, the series includes a self-degaussing feature, which eliminates the output drift due to temperature change and residual magnetics. The products also include an interruption feature, used for motion detection and data acquisition notifications, to lower system-level power consumption.
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